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Impacts of inclining incidence on surface plasmons excited by a focused vortex beam

PINBO HUANG1,* , BIN LI1, LEIJUN YI1, XINLING WANG1, YUEMEI WU1

Affiliation

  1. Chengdu Aeronautic Polytechnic, 610100,China

Abstract

This paper reports the analysis of Surface Plasmons(SPs) field on the metal film induced by a inclining focused vortex beam, Using vectorial Debye integral theory, general angular spectrum expression for inclining incidence is given and the field intensity in the vicinity of gold film is simulated and analyzed under two kinds of opposite inclined ways relative to linearly polarized direction. The results indicate that the relationship between inclining orientation and polarized direction decides SPs field pattern and especially inclining direction coplanar with linearly polarized direction, inclined angle can adjust the amplitudes and offsets of asymmetrical field peaks but lateral FWHM of zero order field peak is expanding by and large for all two inclined way with increasing inclined angle which it is potential to decrease transverse resolution in the imaging system..

Keywords

Surface plamons, Inclining incidence, Vortex beam.

Submitted at: Jan. 18, 2014
Accepted at: Nov. 13, 2014

Citation

PINBO HUANG, BIN LI, LEIJUN YI, XINLING WANG, YUEMEI WU, Impacts of inclining incidence on surface plasmons excited by a focused vortex beam, Journal of Optoelectronics and Advanced Materials Vol. 16, Iss. 11-12, pp. 1237-1241 (2014)